Tork 24VAC Heavy Duty AC Vibrating Bell APPLICATIONS: For indoor or outdoor applications. High sound output, durable and dependable performance. Ideal for schools and hospitals. FEATURES: INPUT VOLTAGE: 24VAC INPUT CURRENT (AMPS): 0.320 SHELL SIZE: 6 inch db @ 10 Feet: 81-95 COLOR: Dawn Mist TERMINAL SIZE: #12 - 22 AWG WIRING: Screw terminals permit fast IN/OUT field wiring. HOUSING: Steel gong and cast aluminum.